How popular is Aprille?

Aprille is a rare given name for women. Aprille is an equally unique surname for both adults and children. (2000 U.S. Census)

Which version is better?

with its source form and related girl names. April(#403 in 2015), Abril(#979), Avril(#1643) and Apryl are the prominent alternative forms of Aprille (outside Top 2000) rated in the Top 2000. These forms of Aprille reached the apex of their popularity in the 1970s (average #1391) and are now much less common (#1256, 91.3% less usage), with the version April going out of style. (2015 U.S. SSA Records)